11550366818 has 16 divisors (see below), whose sum is σ = 18099922176. Its totient is φ = 5521548720.

The previous prime is 11550366781. The next prime is 11550366823. The reversal of 11550366818 is 81866305511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117121 + ... + 1127412.

It is an arithmetic number, because the mean of its divisors is an integer number (1131245136).

Almost surely, 2^11550366818 is an apocalyptic number.

11550366818 is a deficient number, since it is larger than the sum of its proper divisors (6549555358).

11550366818 is a wasteful number, since it uses less digits than its factorization.

11550366818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244649.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 11550366818 in words is "eleven billion, five hundred fifty million, three hundred sixty-six thousand, eight hundred eighteen".